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Men's Weekly

Curious kids: how do gills work?

  • Written by Culum Brown, Professor, Macquarie University
Curious kids: how do gills work?David Clode/Unsplash, CC BY

How do gills work? Tully, aged 7

Curious kids: how do gills work?

Great question, Tully! Animals on land breathe air, which is made up of different gasses. Oxygen is one of these gases, and is made by plants (hug a plant today and say thanks). All animals need to breathe in oxygen to survive.

When the air goes into our lungs, oxygen goes into our blood...

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